Fertilization and Liming

Fertilizing and liming crops grown under no-tillage is not radically changed when compared to conventional practices. There are differences, however. Most of these differences arise from the fact that, under no tillage, the soil is not moved nor disturbed except in the slot where the seeds are placed. Also, under most systems of no-tillage, a residue of dead plant material is left on the soil surface and a kind of natural mulch is formed. The non-disturbance of soil resembles conditions in permanent pasture so that principles proved there are valid for row crops grown under no-tillage in general. The presence of a surface mulch changes the soil water regime, particularly at the soil surface. Principles of fertilization and liming for no-tillage are based on these two conditions as well as on the nutrient requirements of plants and the specific soil and climatic conditions encountered.

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